Three roommates involved with a "sex dungeon" at their home may have murdered a Marine's wife in California as they tried to satisfy their fetishes, investigators say in newly unsealed search warrants.

Detectives found "bondage type sex apparatuses, toys and tools" at the home of the two women and man who have been charged with murder in the death of 22-year-old Brittany Killgore. Her body was found near a Southern California lake on April 17, less than a week after she was reported missing.

Investigators believe all three suspects were with Killgore at their home in Fallbrook, north of San Diego, shortly after the victim sent a desperate text message to a friend, "Help."

Killgore was last seen April 13 in a borrowed purple evening gown, three days after she filed for divorce from Lance Cpl. Cory Killgore, who was serving in Afghanistan at the time. The documents say her body was found with neck injuries consistent with strangulation and marks on her wrist and leg that suggested someone tried to use a saw or other tool to dismember her.

A San Diego County sheriff's detective said in one affidavit that the trio may have targeted Killgore for their "unusual sexual fetishes." Louis Ray Perez and Dorothy Maraglino told authorities they were involved in "master, servant and slave role playing."

The third suspect, Jessica Lopez, said she strangled the victim, fearing the victim would upend a kinky sex ring by seducing her "Master," according to the warrants. Lopez wrote in a seven-page letter that she believed Killgore was trying to come between her, Perez and Maraglino. All three have pleaded not guilty.

Lopez, who calls Perez her "Master," shoulders full blame for the killing, according to the warrants, saying she acted after the victim told her that she had a "whole night planned" with Perez, comments suggesting jealousy was a motive.

Lopez, 25, said she had been burned before in a relationship and knew what she had to do when Killgore entered their Fallbrook home. Lopez said she shot the victim with a stun gun, wrapped a rope around a neck, buried her face in a pillow and strangled her. ...